1320099966 has 48 divisors (see below), whose sum is σ = 2898879984. Its totient is φ = 434115072.

The previous prime is 1320099943. The next prime is 1320099971. The reversal of 1320099966 is 6699900231.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 650245 + ... + 652271.

It is an arithmetic number, because the mean of its divisors is an integer number (60393333).

Almost surely, 2^1320099966 is an apocalyptic number.

1320099966 is an abundant number, since it is smaller than the sum of its proper divisors (1578780018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320099966 is a wasteful number, since it uses less digits than its factorization.

1320099966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505 (or 2502 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 1320099966 is about 36333.1799599209. The cubic root of 1320099966 is about 1096.9890014123.

The spelling of 1320099966 in words is "one billion, three hundred twenty million, ninety-nine thousand, nine hundred sixty-six".